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Our field of operation

Since more than 30 years, technology-oriented particle, analysis and sensor systems have been developed, designed and manufactured under the name Topas. They can be used to generate, condition and analyse test and reference aerosols. In addition, more than 60 series devices and 20 test systems of our medium-sized Saxon company have been widely used and proven for the classification and testing of filters and filter media in worldwide industry and basic research for decades.



Applications for our products


Hot Topic: New guideline for exhaust emission limits

The FCS 249 Field Calibration System is best for the calibration of condensation particle counters and electrical aerosol monitors. It complies with all NaCl test aerosol requirements of the German exhaust emission test equipment calibration guideline and is perfectly suited for use in harsh workshop conditions. In the detailed product description more information can be found by measuring device manufacturers in the automotive sector, workshops with calibration laboratories or certification service providers.



Home match in Chemnitz for Topas

Innovative filter media and elements, "green" or smart filters - the main topics of the 16th "Symposium Textile Filter", organised by the Sächsisches…

Successful FILTECH 2023 for the Air Filter Testing Experts from Topas

Back in Dresden, we draw a positive balance of this year’s exhibition – successful business transactions and valuable exchange of experience with…

Snapshots from FILTECH 2023 in Cologne – Topas live on site

Come and see the first insights after FILTECH 2023 has started this morning from this years Topas booth. Visit us at booth 76/hall 8 at the largest…



Membrane & Filtration Expo

Bangkog, Thailand



Geneva, Switzerland


Lounges Cleanroom

Karlsruhe, Germany


Basics of testing air filters - Registration for summer course 2023 now possible

Would you like to learn more about the basics and application-oriented implementation of air filter testing? Then visit our training on 20 June 2023 in the Technical Innovation Center at our company location in Dresden. The registration deadline is 30 April, you can find more information here. We look forward to seeing you!


A glimpse into our work

Company video

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Since 1999, the quality management of Topas GmbH has been successfully certified according to DIN EN ISO 9001.



Students from the Zittau/Görlitz University of Applied Sciences get a taste of everyday practice

How does a medium-sized company operate in a niche industry? What are all the places where test benches for air filters are used? What does aerosol generation look like in practice and what requirements do customers place on it? These and many other questions were answered by students of environmental bioprocess engineering at the Zittau/Görlitz University of Applied Sciences. At the end of the semester, they visited companies in Dresden to experience the practical application of the knowledge from the lecture hall. You can read about where they were able to get a taste of things during their visit and what else they learned in the Topas Campus for students.